body, html {background-color: #333; height: 100%; margin: 0; padding: 0; color: #ddd; font-size: 1em; font-family: arial, tahoma, verdana;}

*, ::after, ::before {box-sizing: border-box;}

.flex-container {width:100%; height:100%; display:flex; justify-content:center; align-items:center;}
.flex-container img {max-width:90%; height: auto;}

.box {text-align: center; justify-content: center;}
img.logo-fb {height: 40px; width: auto;}
.flex-item {}
p {color: #ddd; line-height: 2em; font-size: 1em;}
a, a:link, a:visited {color: #fff; text-decoration: none;}
a:active, a:hover, a:focus {color: #e42320; text-decoration: none;}